Remove R2, I don't think it is really serving much of a purpose there. Also, 10k for R5 seems quite high. Try exchanging it for, say, 4.7k, or even 2.2k. I just pulled these values out of mid-air, no math went into finding those values.
EDIT: I almost think you can take out R5 completely.
Is the signal on the bipolar transistor supposed to be inverted? The way you're triggering the FET now, it will switch on when the signal on the BJT is switched off.
Furthermore, the components to the right of the FET are connected directly between +5v and ground, meaning they will always be supplied with current. The 1 ohm resistor is going to take most of the current. Are you trying to switch on current to the components to the right of the FET? If so, you're taking a completely wrong approach.